Trijicon ACOG TA31F
Video | What’s Included | Specs | Pictures | Related Info
An iconic magnified optic that’s still one of our favorites. Rugged, reliable, and one of the best in its class – the Trijicon ACOG 4×32 is as relevant as ever.
The Trijicon ACOG (Advanced Combat Optical Gunsight) is a fixed-power compact riflescope with an illuminated chevron reticle. It is designed to be extremely durable and reliable. Combining traditional, precise distance marksmanship with CQB speed, this variant includes a bullet-drop compensated (BDC) reticle. Every feature of its design was chosen for a single purpose: to provide increased hit potential in all lighting conditions. This is the TA31F, a 4×32 power scope designed for .223 rifles. It features dual illumination, with fiber optics for daylight illumination and tritium for illumination at night, and it’s waterproof to 100 meters. The glass is super clear, the reticle is easy to use, and the scope can easily be used to hit targets at 500+ yards.
OVERVIEW VIDEO
WHAT’S INCLUDED
One Trijicon ACOG 4×32 BAC Riflescope – .223 / 5.56 BDC (TA31F); Thumbscrew Flattop Adapter (TA51); 4×32 Scopecoat (TA64); LENSPEN (TA56); Lanyard Assembly for Adjuster Caps (TA71E); Trijicon Logo Sticker (PR15); ACOG Manual; Warranty Card.

We include an 8.5″ x 11″ rifle zero target with every optic. We recommend a 100-meter zero for the ACOG on most 5.56 rifles.
How to Zero in 2 Minutes – Video – T.REX ARMS
SPECS
Weight w/ Mount | 15.1 oz. (428.08g) |
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Weight w/o Mount | 10.5 oz. (297.5g) |
Magnification | 4x |
Objective Lens | 32mm |
Reticle Pattern | Chevron |
Reticle Color | Red |
Bullet Drop Compensating (BDC) | Yes |
Caliber | .223 / 5.56 |
Power Source | Fiber Optics & Tritium |
Eye Relief | 1.5 in. (38.1mm) |
Exit Pupil | 0.32 in. (8.13mm) |
Field of View | 7° |
Field of View | 36.8 ft. @ 100 yds. (12.27m @ 100m) |
Mount | Flattop Thumbscrew Mount (TA51) |
Housing Material | Forged Aluminum |
Adjustments (Per In. @ 100 Yds.) | 2 clicks |
Dimensions (L x W x H) w/o Mount | 5.9 x 2.0 x 2.5 in. (150 x 51 x 64mm) |
PICTURES